Renaming Your Configuration Folder
Starting with version 7.1.0, you can use the configuration of existing Civic Platform instances as the basis for the configuration of a to-be-installed instance. If you plan to use the configuration file from a prior instance, but want to delete the instance, rename the directory that contains the configuration of the existing instance so that the uninstall program does not remove it.
The $\av.xxx\conf folders contain the configuration files. Rename these folders to prevent the uninstall program from removing them.